97 blazer trany leaking at rear of pan i tighten pan bolts add atf now its leaking worste?

To cure the problem you will need to remove the pan and the old gasket material, and straighten the pan where each bolt has distorted it. Then, once everything is clean and dry, you need to install a new gasket, taking particular care to follow the instructions that come with it. Do not overtighten the bolts, or the gasket will split or otherwise distort, creating a path for a new leak. This operation involves replacing a great amount of ATF; and, it is advisable to replace the transmission filter while the pan is removed, if it has not been changed.